111101110110221 has 16 divisors (see below), whose sum is σ = 138517034674560. Its totient is φ = 86571440513280.

The previous prime is 111101110110217. The next prime is 111101110110229. The reversal of 111101110110221 is 122011011101111.

It is a cyclic number.

It is not a de Polignac number, because 111101110110221 - 2² = 111101110110217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111101110110196 and 111101110110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101110110229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 812825 + ... + 14928593.

It is an arithmetic number, because the mean of its divisors is an integer number (8657314667160).

Almost surely, 2^{111101110110221} is an apocalyptic number.

111101110110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111101110110221 is a deficient number, since it is larger than the sum of its proper divisors (27415924564339).

111101110110221 is a wasteful number, since it uses less digits than its factorization.

111101110110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14218004.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111101110110221 its reverse (122011011101111), we get a palindrome (233112121211332).

The spelling of 111101110110221 in words is "one hundred eleven trillion, one hundred one billion, one hundred ten million, one hundred ten thousand, two hundred twenty-one".